The table below shows a data series, the forecasts using exponential smoothing (a=0.2 and a=0.4,)andthe corresponding MAD of each forecast model. Which of the followings is TRUE about the forecast for Period 8 ? a. There is no much difference in using either exponential smoothing models. b. The exponential smoothing model with =0.4 is more accurate than the model with =0.2. c. The exponential smoothing model with a=0.2 is more accurate than the model with a=0.4. d. An exponential smoothing model with =0.2 would yield the same result as an moving average model with n=6